Automatic train-stop system.



E. G. MASCARBNHAS.

AUTOMATIC TRAIN STOP SYSTEM, PLICATION FILED JUNE 24,1913.

60. fuif/4 E. G. MASCARENHAS.

AUTOMATIC TRAIN STOP SYSTEMA AAPPLICATION PPLBD UNE 24,1913.

Patented Dc.. 1, 1914,

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6 SHEETS-SHEET 2.

3 W Wis A, Fi A 1M EU v n M k E W ll W0 70 WITNESS/f8 E. G. MSARENHAS.AUTOMATIC TRAIN STOP SYSTEM.

APPLIUATEON FILED JUNE 24, 1913.

-EL Patented Decf 191%,

SHEETSWSEEET 3 E. G. MASCARENHAS.

AUTOMATIC TRATN STOP SYSTEM.

APPLICATION TILBD JUNE 24,1913.

Patented Dec. l, 1914.-.

SHEETS-SHEET 4.

E. G. MASGARENHAS.

AUTOMATIC TRAIN STOP SYSTEM.

APPLICATION FILED JUNE 24,1913.

L ggf Patented Dec. l, 1914.

5 SHEETS-SHEET 5. 71,.

v l 5- f-{nil fla/gif? 8 ,imma/s Til/:a:

showing the stop device releeserl for ille' stopping of the ei-ein; andFig. e diegreiometio View showingtlie arrangement of loe blocks intowhich the track is divirlecl,

Referring to Fig'. l' of the drawings, ABB am! C desigiiaie ihr/ee ofthe olocksirito which e, oracle is cliviclffl, :incl the respectivelooks have e source or current l eoirieoeerl wit-li the rails a, a', l),of, o, c', eiicl connecte across tlie rails of ezioii. block is e 'relayor equivalent reeeiis that is eorisenly eneru gizeil es loog es e mileis riot in the bloei: to short circuit by its axles lelie source ofcurrent l. ll/oen the source of corren?, is shor-oiroiiited she relay 2becomes deoergizerl so thais the semaphore or other block signal 3 willmove to e'nger or horizoeiel position, suoli signal being normally keptir. clown or clear position by a solenoirl l equivalent means which hasone ilermiiel connected by' a wire 5 with e, battery or other source ofcurrena 6 which lies grounded teririiiiel 7 'whereby the circuitcompleted zo the grounc'ie iermirial 8 of illie solenoid 1i, there beingin elle Wire 5 the fixed and movable eonmcts 9 and 10 of the relay. Atone euri of each block ere eonteor, rails r and r' which are normallyelee3ically connected together oy wires ll. and l2, @nel iiirefl andmovable contacts l arial lll, die movelile coriteet' being comiecierlwith lieoroovable Contact 10 of die relay 2 so the@ when lie semaphoreis in danger position, by reason of ire-io loeliig in the block, theeooiect rails will be disconnected7 so siiet? should aiioiiier trainenter alle lilo/oir, alle stop circuit liereof would ls-e so Vimiueneerlthe rails if and 7 being disooiinectecl iliel, the eneiririg trein wouldbe erreei/ed, :in the presem iiistarice a. stop leviee is applied to`'alie air brake sysnem so as to eeuse she brakes to set under emergencyor abnormal ein conditions, but ia is to loe unrierslsooel lle?, thesie@ device could be applied so throttle of the locomotive when theleiter is steam driven, could be applied lio operi the cireiiiit4 or"the propelling moors in mi electric locomotive. lo the drawings l5riesigristes the brake pipe in which `is e valve 1 lowing on its seemseoor io which lioseiierl e518 e fie?. ble element time engages illeperiphery of' lie seeizor l', ,sind connected with 'iiois elemeii'e l@ie e Spring other 2O 'wliioi is so more the valve to e. poeiigioi fo*-cefosiog lie brakes lio se. leioli 2l normally engages a iingerforeqiiiveleiii on alle sector L", this leeii' Carries en armature 23 whichis ottieeterl by :in electio-magiiel; 'when the leiter is energized. so*simil the re/lol?. 2l "will be released to permii; ille sector j?.element 19 and spring 2O io operi the relie This elecro-magiiet 2li isifo e. stop circuit consisting; oli" initie Wires 25, 2o eetl' 2li, herebeing between the Wires .25

'por

and 26 e, source of current. 12S, and' 'between che Wires 26 and Q7 'emove-.ble and e fixed Contact S29 and 3C of the controlling relay 3l.'lie'contoots 29 and 30 of die relay 3l are normally seperated so thatthe stop ci;in cuit; will loe operi, and to effect this result die relay3l is energized as long as eoiirliions are normal.

The relay circuit is carried `Wholly by the trein 'while iie latter isat any poiii in the block except where the eoitae rails? erifl e erelocated, enrl when ille rain is at the Coriisae rails the relay circuitwill have e por tion loceerl iii lie israel, and es long as the bloektis@leer and the said track portion of the is intact the relay circuit'will maineompleteri so that the stop` device will.

flies be ecuetel.' ln Fig. l the circuit the relay 3l is shown closed bytlieelosiiig portion corrieri lo] the tram, suoli closing ioneorisisting of circuit elosers 32 onli 33 and the eonneotiiig wire Themov oole members 35 of lie cirouii: olosers ere electrical@v connectedeili the supporting plates or breolreos 36 which ere respectivelycormeete oy wires 37 and 38 io the relay 3l, there being iriolude. inone oi" e wires elle battery or einher source of current 33. Tli movablemembers 85 berry springs which are eclepgecl io eligiiffe the fixedoorieets 35 on eiroui'i; Dreamersi armi it is *zo liese contests 35aalia-ml; elle wire Bilis ooimeeefl. il/lien the perrs ere iii theposition shown in Fig. l the eirrerii, passes through e pei-li.consisting of the beitery 39, 'wire S?, relay El. wire 38, circuitoreolrer 33, rriz'e Sil, oir-- cuirJ breaker 32 ami wire 3'?.

The moveble members 35 of elle oirkcuit breakers are iii the form oi:class levers pivorefl 'at #il lo the breelieis 36 ariel the ouer ends'olhe respective le vers, which, like of mesal rio `form oooclucors,carry! metallic shoes and e2 whieii ere eciupled to enL gege the Contactrails c enel i", :is shojwiiiii 5j so to seperate the contacts' of thecircuit breakers 32 and 33. 'When the coritaoi slioes 42 and l2 engageiie rails fr 'anni 7"' the relay 3l lies its circuit coiiipleerl 'by eporiioii irisellerl in the *Lr-.idle said poi'ion consisting of rails o'and 'r'. Wires ll 'will lil and coiibeets lo arirll. so iliot heoomjplete Gironi*n consists of the relay 3l. Wire 38,*rigoib Lreelrei;y353, right lever ,35, slioe; rail ff-, Wire lLeonteets 13 and lip. wirecon'ac: rail fr. shoe 42. left lere left 36, Wire buttery 39 and relayThe iiow oi eurreiit-rlirougli liis path con iriiies es loiig es theshoes @wind -il are iii oo oec; Willi the rails o and 'r'. l'lierehappens to be e train in the same l'ilocls lie exteisel eircuit of therelay will 'oe operi es shown. iii Fie, e, reason of lie coute e.lneirig sepais' erlirom the contaelwlf l broogii e. out oy the 'relleari brackets 36, are merle Dwi eviee giie meva'iiiie eeneeei 29 0 31is pimf'ifiefi, sueii ieeiion cnsiring (if im exeeusion 50 ai e searranged as to extend under m* engeg iie Lip 5l of ihe eontae 2Q when'iie @i ne iain is sniicientiy iow. ineens die engineer een eeneinnesiewiy into the Mock without abe engine ing i Dipped, n s'ziiis *wayunnecessary deiziys are prevented and tiieepeed of 'Lise trein can beqnickiy increased :is soon as the greek ahead is dem'. i

When the Shoes 42 and 'ei-2 sifiife inetiafiis 2' and 'r' n'signaieiicuiJ is Giese/, which circuit includes :i pair eireni' eieseis s ande @init have iieii' zidjiisrlibie ,1s emineeted together by :i wire 533iie membie centiiefs 5iei'e respec- Lf connected by wire 55 and 5G wiiia er other signai 5T suitably arranged '0 met die attention of theengineer The circuit Ciosei'n s and .5, e, Liegi* with cileili eieeeis:i

,'.*|1 f.=,`u i,"yrfp nime@ nein Lne iiiteez, mi in um @he movablecontacts 5&1 of the ei enit cios/ees s :ind e are eairieii by theiev/ers 35 Wine-ii ziiey are insuiaed so that @ne eingegement of theiiees 42 and +22 .V'iiii die mis i and i" wiil perform three functions;ist, the? wiii connect the ieiny Si wih the ion Oi the Circuit instaiiedin die meek: second, they will open the circuit eiosers 32 emi 33. andtiiii. iiey Wiii eiese the cireni. eiosers .s eiid s. When the shoes and2' :ire mit oil engagement with the eentae'; rziiis i' and 7"? iieCircuit cieeeis a)"2 iii be maintained in eine i position, ind eiieiiieiosei'e e and .5" in epe pesiioL 'y Springs 58 or eqiiivaien ineensacting en ,'i'ie levers 35. it may he (iesiiabie to eernpei 'die ,engineto nutonniicaiiy emp et iewei maximum speed when the train eneis :iiieei than is possibie with the Speed responsive efeviee whenV iie minis ieveiing giiiongh he vioei: beyond the eentaet mils li7 and 7. F01"this pui-pose means p1* yid-eci shifting he coniizic 44 in the sinln hebridges die relay 3l. Such siiifing means consists nii an electra-magnet@O which is connected by wires (il and 62 te 'he wires und 5G` s0 that.'when the circuit eloseis .e and s nie closed, the electro-magnet 60 wiiibe energized at he sume 'ime the signal oiibeii 57 is energized. Thisenergizing of the nmgne GO moves the Contact iofi bile position shown inFig. l te ine positiva siioii'n in Fig. 2%. so that iie eonee; xviiiengage the contact H somewhii eaiiiei' in the acceleration of the speed015:' the 'iziin than when theel-minet ii is heid in is fniij.'retracted pusiion spiing. in iiesj/steni heireinbeme deseiibeiiihe stopeiieui is nin-indiv opened. but it any be 'desirable 'to employ aneimelij; Giese@ te nieve lib-5 nected'witli the tinck rails 'for electrv tiene weight or hammer 66 which is adaptq ed to strike, when theelectro-magnet 24 is denergized, a latch 67 to release it from the 5linger 22 of the brake valve actuating Ineens. The stop circuitcontrolling relay 3l acts on `this ern-sature or movable Contact 29 insuch a manner pas to normally engage the fixed contacts 30 and at lowspeeds the device 50 serves to inaintainthe contacts 9.9 end 30inengagement in case the relay 3l is de'nergized lby the presence ofanother trairnin the block. slider or bodily movablecontact 68 isoperatively connected with the reciprocatory rod 49 of the speedrespcnsiy device D. rlfhis sliding Contact 68 is adopted to engage nnencontacts 69 and 7.) which normally iorin with the slider 68 e port ofthe stop circuit, the slider being in the posltion shown by dottedlines, Fig. when the train is not moving. Cooperating with the slider'is movable contact 7l. carrying an armature T2 which is adapted beottracted by the electro-magnet @il `when the bell circuit is closed,thereby opening the stop circuit at a time when the train is travelingat such s speed that the slider is out ot engagement with the contact69, es shown in Fig. '(3. ln case the trein attains a dsngerf'isly highspeed the slider 68 will niove so far to the right, Fig. 5, thatthehinsulaion 74 will pass under the contact .71 and open the stopcircuit. Of course when the extension is retracted from the contact 29,the stop circuit con be opened by denergizing the relay 3l another trainin the block has opened the circuit by disconnecting the Contact rails rand AFrom the 'foregoing description teken in connection with theaccompanying draw lings, the advantages of theinethod of: operotion andof the apparatus shown will be readily understood by those skilled in thart to which the invention appertains, and while l have described theapparatus which l non' consider to be the best embodiment thereof, ldesire to have it understood that the apparatus shown in merelyillustrati-ve, and that such changes may be inode 'when desired as arewithin the scope of the appended claims.

lrlaving thus described my invention l claim as new and desire to secureLetters Patent: l

lin a trein stop stein. the combinetiooffof a Vblock consi ing of trackvrails, a sourceol current connected with the rails, contact rails and anelectric device conf ny fand lconnecting the contact rails' togetheradapted to be delocrgisicd by the finies of the train sliortmircuitingthe said source or" j current' :for causing the Contact rails to bedisconnected.. a stop circuit on the trein, a

normally energized relay including contacts' controlling the stopcircuit, a shunt around4 the contacts, means for opening the nor mollyclosed relay circuit and connecting the relay with. the Contact railswhereby the re- .ley maintained energized when the contact rails areelectrically connected and is denergized when the contact rails aredisconnected, end a speed responsive device adapted to control the shuntand the contacts of the relay for controlling the stop circuitindependently of the relay when the speed of the train reaches apredetermined rate. v

2. ln a. trein stop system5 the combination of a block consisting oftrack rails, a source of current connected with the rails7 contact railsand anelectric device connected with the track rails Jor electricallyconnecting the Contact rails together and adapted to be dene-rgized bythe axles of the trein short-circuiting the said source of current forcausing the contact rails tobe disconnected, a stop circuit on thetrein, a normally energized relay controlling the stop circuit, meansfor opening the' normally closed relay circuit and connecting the relaywith the contact rails whereby the relay 'is maintained energized whenthe Contact rails are electrically connected and is deenergized when thecontact rails are disconnected, o speed responsive device for con-"trolling the stop circuit independently of the relay when the speed ofthe train reaches a predetermined rate, and means actuated bythe speedresponsive device for preventing the relay from controlling the stopcircuit When the speed of the train is below' a predetermined point.-

' 3. In a system of the class described, the combination of a pair ofcontact rails, a controlling circuit including a pair of circuitbreakers each having a movable mein- 4ber moved to open circuit positionby a. contact rail, a switch controlled by the presence of e. train 1n eblock for connecting or discombination ol2 a normally closed relaycircuit carried by a train -aud adapted to be opened by anothercontrolling train, a speed responsive device includingn movableelement,v and a stop circuit including@4 switch controlled mechanicallyby the said element the speed responsive device or electrically 'oy therelay circuit.

connecting the contact rails, a shoe on each l wel 'lle class described,'tlie D connected with 'the crcuit and normally' separated, n normallyopen shunt around tire said contacts, and speed responsive means forclosing the shunt energize the stop circuit independently or the relay.

d. in a system of the class described, the combination of a train stopcircuit, a relay Jing contacts connected With the cirenrt end normallyseparated, e normally einen shunt around the Said contacts, said -l itincluding separately movable contacts, speed responsive device formoving one for closing' the shunt at a predeter- '2 speed of the train,end means w the other contact for closing the et a lower sneed. e systemci the class described, the combination of e 'train stop circuit, arelay having its contacts connected with the cirit and normallyseparated a normally i n shunt around the said contacts,l said seienJincluding seperately movable contoets, e speed responsive device formoving one Contact tor clcsingtlle shunt et predetermined of speed of'the train, electrdroegnet for moving the other conr to close the shuntet e lower speed, end

e on 'the track for contro ling the cirrne seid electromagnet. e of 'theclass described, the

einen in step circuita a relay cuit' and normally se combination of astop circuit including an electro-magnet, a tram stop device controlledby! the electro-magnet, a relay normally energized, means whereby saidrelay is deenergized when the train is in the controlling range ofanother train, the contacts of the relay being connected with the stopcir1 arcted, and on anto` matically. "actuated oclt for holding thecontacts out or engagement when the speed is below o certain oint. Y

9. ln a system o the classdescribed, the combination of a stop circuitincluding en electro-magnet, a train stop device controlledoy theelectrdmagnet, a relay no1-- mally energized, means whereby said relayis denergized when the train is in the controlling range of anothertrain, the contacts of the relay being connected with the stop circuitand normally separated, an automatically-actuated lock for holding thecontacts out of engagement When the speed is below a certain point, anda speed responsive device for closingthe stop circuit when the speed ofthe train reaches a predetermined point.

In testimony whereof I have signed my name to this specification in thepresence ot' two subscribing Witnesses.

' ENS GUIMARES MASCRENEAS.

Witnesses SAMUEL W. HANAKER, d'. R. Ruini.

